Lawn sprinkler



FIG. 1 is a top plan view of a lawn sprinkler showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being a mirror image of that shown;

FIG. 4 is an end elevational view thereof;

FIG. 5 is an opposite end elevational view thereof; and

FIG. 6 is a top perspective view thereof. 

The ornamental design for a lawn sprinkler, as shown and described. 